/Engine/Source/Runtime/Landscape/Classes/LandscapeComponent.h
static void UpdateWeightmapMips ( int32 InNumSubsections, int32 InSubsectionSizeQuads, [UTexture2D](API\Runtime\Engine\Engine\UTexture2D) * WeightmapTexture, [TArray](API\Runtime\Core\Containers\TArray)< [FColor](API\Runtime\Core\Math\FColor) * > & WeightmapTextureMipData, int32 ComponentX1, int32 ComponentY1, int32 ComponentX2, int32 ComponentY2, [FLandscapeTextureDataInfo](API\Runtime\Landscape\FLandscapeTextureDataInfo) * TextureDataInfo )